小麦骨干亲本阿夫衍生系赤霉病抗性的关联分析

doi:10.13430/j.cnki.jpgr.20171205003

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小麦骨干亲本阿夫衍生系赤霉病抗性的关联分析
DOI:
                        10.13430/j.cnki.jpgr.20171205003
                    
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作者单位:1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014;,1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014; 2南京农业大学农学院,南京 210095,1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014;,1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014;,1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014;,1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014;,1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014;,1江苏省农业科学院种质资源与生物技术研究所/国家农作物种质资源平台江苏子平台,南京 210014;
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基金项目:国家重点研发计划(2016YFD0100102-3)；国家转基因生物新品种培育重大专项(2016ZX08002-001)；江苏省自然科学基金青年(BK20140757)；江苏省农业科技自主创新资金项目(CX(17)3004)

Association mapping of Fusarium head blight resistance using the derivatives of core parent Funo in wheat

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1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ; 2 College of Agriculture, Nanjing Agricultural University, Nanjing 210095,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;

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摘要:

赤霉病是影响小麦产量和品质的重要病害，发掘抗性遗传变异、培育抗病品种是防治小麦赤霉病最安全、经济的根本途径。本研究在5个环境中对阿夫及其264份衍生品种（系）进行了赤霉病抗扩展性鉴定，利用分布于19条染色体上的52个标记进行遗传多样性分析、群体结构分析以及关联分析，共检测到19个与赤霉病抗性相关的位点。其中，分布在2B、2D、3A、3B和5A染色体上的5个位点能够在至少5个环境中的2个且在5年平均值中检测到。3B上的赤霉病抗性位点Xgwm493与Fhb1连锁；5A上的赤霉病抗性位点Xbarc117与Fhb5紧密连锁。标记位点的等位变异表型效应值检测结果显示11个等位变异与赤霉病抗性关联，其中3个等位变异具有减效效应，减效效应值最大的是Xgwm493-180，7个等位变异具有增效效应，增效效应值最大的是Xbarc117-225，1个等位变异为无效等位变异。同时发现材料的赤霉病病小穗数与其携带优异等位变异数目呈线性负相关。

Abstract:

Fusarium head blight (FHB) is an important disease affecting the yield and quality of wheat worldwide. Exploration of elite alleles and development resistant cultivars are considered as the most economical and safety method in controlling the disease. In this study, the resistance to spread of FHB was evaluated using Funo and its 264 derivatives in 5 environments. Genetic diversity, population structure and association analysis were studied based on 52 primers distributed on 19 chromosomes. A total of 19 markers were detected to be significantly associated with FHB scores. Of which, five loci on chromosomes 2B, 2D, 3A, 3B and 5A were identified at least in two of five environments and for average number of disease spikelets (NDS) of the five environments. The Xgwm493 linked to Fhb1 on chromosome 3B, and Xbarc117 closely linked to Fhb5 on the chromosome 5A were detected to be associated with FHB resistance, respectively. The result of calculating phenotypic effects of allelic variation showed that eleven alleles were detected to be associated with FHB resistance and among them, three alleles had reducing effect, with the Xgwm493-180 having the larger effect; seven alleles had improving effect, with the Xbarc117-225 showing the largest effect, and an allele had no effect. It was also found that the NDS was negatively linear correlated with the number of favorable alleles carried by the materials.

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付必胜,付黎明,吴燕,等.小麦骨干亲本阿夫衍生系赤霉病抗性的关联分析[J].植物遗传资源学报,2018,19(4):598-611.

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收稿日期:2017-12-05
最后修改日期:2018-03-29
录用日期:2018-01-05
在线发布日期: 2018-07-16
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